Smoke-stack.



N. M. SGHARNBERG.

SMOKE STACK.

APPLIOATION FILED MAR. 1, 1909.

Patented July 6, 1909.

. Inventor:

Witnesses Actor-hays.

UNITED sTATns PATEN opinion- NANNING M. SCIIARNBERG, OF MIIHIGAN CITY,INDIANA.

SMOKE-STAGK.

Application filed March 1, 1909.

To all whom it may concern:

Be it known that I, NANNING M. SCIIARN- BERG, a citizen of the UnitedStates, and resident of Michigan City, in the county of Laporte andState of Indiana, have invented certain new and useful Improvements inSmoke-Stacks and I do hereby declare that the following description ofmy said invention, taken in connection with the accompanying sheet ofdrawings, forms a full, clear, and exact specification, which willenable others skilled in the art to which it appertains to make and usethe same.

This invention has general reference to improvements in metallic smokestacks; and it consists, essentially, in the novel and peculiarcombination of parts and details of construction, as hereinafter firstfully set forth and described, and then pointed out in the claims.

In the drawings already referred to, which serve to illustrate thisinvention more fully, Figure 1 is an elevation of my improvedsmoke-stack construction, partly in section, the sectional part being online :t a of Fig. 2. Fig. 2 is a plan of the same. Fig. 3 is an outlineplan of a twin-stack construction. Fig. 4 is a sectional view of afragment of the stack-base. Fig. 5 is a plan of a portion of the sameshowing the means for removably retaining the clamping-bolts inposition. Fig. 6 is a perspective view of one of the clamping-levers.

Like parts are designated by corresponding symbols and characters ofreference in all the figures.

The object of this invention is the production of an efficient,serviceable, durable, and cheap metallic smoke stack for a masonrysub-structure, and while applicable to all kinds of smoke-stacks, it isparticularly designed for use in connection with existing masonrychimneys, which for some reason or other and especially for lack ofdraft, have to be lengthened. This is particularly the case where higherbuildings are erected adjacent to structures and where the draft of thechimneys of the lower building is impaired by the higher building orbuildings.

A in these drawings designates the masonry sub-structure of asmoke-stack. It may be of any size and external contour, and also thetop of any masonry chimney.

B is the base, and C the smokestack. This base is preferably an ironcasting having a rectangular or oblong body provided Specification ofLetters Patent.

Patented July 6, 1909.

Serial No. 480,627.

with laterally projecting flanges 24 of sufficient width to cover theentire upper surface of the sub-base A, said body being tapering andterminating in a shouldered annular rim 10, to which the stack B is,preferably re- 1110 ably attached by screws 1], or permanently securedby rivets in any approved manner. This stack-base is ren'iovably held tothe sub-base A by four, (more or less,) clamping levers 12, said levershaving trunnions l3, engaging semi-circular bearings 19, Fig. l, in thecorners of the tapering body, there being slotted apertures 18, in whichsaid bearings terminate, and through which the levers 12 are passed withtheir lower portions. The upper end of these clampinglevers 12, arebifurcated at 14, Fig. 6, for the passage of clamping-bolts 15, saidbolts being provided with suitable nuts 17, to draw the upper end ofsaid levers 12 toward the body of the stack-base, as will hereinafter bemore fully referred to. On the lower end of these clamping levers thereare, preferably \l-shaped, projections 16, which are adapted to engagethe interior of the flue I), Fig. 1, and thereby securely hold thestack-base with its smoke-stack tosaid sub-structure A.

On the four corners of the stack-base there are located above thebearings 19 lugs, 20, which lugs are bifurcated at 21, Fig. 5, so thatthe heads 22 of the bolts 15 may be passed into the space 23 betweensaid lugs and the body of the stack-base. By bllUS forming the lugsintegral with the body of the stack-base I am enabled to produce theentire stack-base in the process of casting without being compelled todo any machincwork thereon, and at the same time provide for ready andconvenient means for placing and securing said bolts IS in position, andremoving the same should this become necessary.

In Figs. 1 and 2 I have shown a single smoke-stack erected upon amasonry sub base or structure, and in Fig. 3 I have out lined atwin-stack upon a single sub-structure. In this latter case I shallplace the four clamping-levers 12 at the four corners marked a, b, c,and (Z; said clamping-levers and their means of attachment to thestackbase being otherwise precisely as shown in Figs. 1 and 2, and Ihave, therefore, omitted to show these clamping-members in said Fig. 3.

I now call attention to the fact that the stack-base is preferably madein cast iron of sufficient thickness so as to be practicallyindestructible, and that, there being no machining or other manual laborrequired for finishing the same, it can be produced at a comparativelylow cost.

By having the lateral flange 24 of the stack-base covering the entireupper surface of the masonry sub-structure, I prevent washing out of themortar or cement used in the structure at the upper end of saidsubstructure, which is a very desirable feature in chimney andsmoke-stack construction.

It is evident that the sub-structure may be a cement or concreteconstruction instead of being made in bricks. It is further evident thatthe lower ends of the clampinglevers may be differently formed from the\l-sh'aped contour shown. I prefer the latter construction for thereason that the V- shaped projections are especially adapted forengaging joints in the brickwork of the sub-structure, or will takeahetter and firmer hold of any smooth surface than any other shape ofprojections.

It will now be observed that in erecting a smoke-stack upon a sub-base,the stack is first attached to its stack-base and then the entire stackplaced upon the sub-base. Then the four clamping-members are passedthrough the slotted apertures 18 at the corners of the tapering bodywith their lower ends, and the trunnions located in their bearings. Thebolts 15 are now placed with their heads into the spaces behind thebifurcated lugs and the threaded portion of these bolts dropped into theslots 14 of the clamping members. When now the nuts 17 are revolved inthe proper direction, they will draw the upper ends of theclamping'members toward the body of the stack-base and their lower endstoward the inner walls of:

the sub-base where the projections 16 will engage said walls at thecorners thereof and thereby securely, but removably, attach the stackwith itsbase to said sub-base.

I prefer to locate the clamping members at the cornersof the rectangularstack-base, but it is obvious that they may also beplaced in the sidesof said stack-base. This and other minor changes which will readilysuggest themselves to a skilled mechanic, may be resorted to withoutdeparting from the scope of my invention.

Having thus fully described this invention, I claim as new and desireto'secure to me by Letters Patent of the United States 1. In asmoke-stack construction having a masonry sub-base, a stack-basecomprising a rectangular tapering body terminating in a shoulderedannular member, a laterally projecting flange on said body adapted tocover approximately the entire upper surface of said sub-base, therebeing slotted apertures in the four corners of the tapering body, andbearing adjacent to the sides of said slots;

clamping levers in said slotted apertures,-

there being trunnions on said levers adapted to engage said bearings,said levers being slotted at their upper ends and havingengaging-projections on their lower ends, and: means at the corners ofthe tapering body for drawing the upper ends of said levers toward thetapering body of said staclebase.

2. In a smoke-stack construction having a masonry sub-base, a stack-baseremovably secured to said sub-base, said stack base comprising atapering base having a laterallyprojecting flange approximately coveringthe upper'surfaceof said sub-base, and terminating in a shoulderedannular rim a stack secured tosaid annular rim, and means for removablysecuring said stack-b ase to said subbase,said means comprising clampingleverspivoted in the-body of said stack-base in approximately theirmiddle, there being fastening bolts at the upper end of said levers, andengaging projections at their lower end, the latter projections beingadapted to engage the inner walls of the sub-base, as described.

3. In a smoke-stack, a base comprising a rectangular tapering bodyterminating in a shouldered rim, a laterally-projecting flange at thelower end of said body, there being slot-holes in said tapering body andsemi-circular bearings adjacent to the sides of said slots; levers insaid slot-holes said levers being. provided with trunnionsadapted forengagement with said bearings; engagii'ig' projections at the lower endof said levers, the upper end of said levers being bifurcated lugs onsaid tapering body above said bearings; bolts in said lugs and passingthrough the bifurcated ends of said lovers; and nuts on' saidbolts.

In testimony that I claim the foregoing as my invention I have hereuntoset my hand-in the presence of two subscribing witnesses.

* NANNING M. SCHARNBERG.

lNitnesses MATTHEW J. KENEFIoK, MAYME C. ZABOUK.

